Intensive and extensive green roofs are shown in appendix 7 1 a.
Nhbc standards chapter 7 1 flat roofs and balconies.
For the purposes of this chapter.
Falls flat roofs and balconies should.
A roof with a maximum slope of 10 from the horizontal.
Insulated above the deck.
Rainwater disposal from roofs and balconies 6m2 or less in area should be considered.
Chapter 7 1 this chapter gives guidance on meeting the technical requirements and recommendations for flat roofs and balconies and pitched roofs with a fully supported continuous weatherproof membrane.
Design that follows the guidance below will be acceptable for both flat roofs and balconies.
A flat roof should be regarded as having a maximum slope of 10 from the horizontal decking or deck is the substrate of a flat roof or the upper surface of a balcony.
Durability and fixing of balustrading and guard rails.
Diagonal bracing to double hipped roof plasterboard fire resisting ceiling in contact with single leaf masonry use of nail guns for fixing trussed rafter bracing.
Strength and movement of masonry balcony walls.
Flat roofs and balconies 7 1 7 1 11 accessible thresholds accessible thresholds shall be protected by adequate weatherproofing and drainage.
Balcony drainage timber balconies and terraces revised october 2018 nhbc standards chapter 7 2 pitched roofs.
7 1 3 flat roof and balcony design flat roofs and balconies shall support and transmit loads safely to the structure.
Balconies and flat roofs to which persons have regular access other than for maintenance shall be adequately guarded to minimise the risk of falling.
The upper trafficked surface of the balcony.
Be produced by an engineer in accordance with technical requirement r5 and be in accordance with bs en 1991 1 1 bs en 1991 1 3 and bs en 1991 1 4.
The structural substrate of the flat roof.
Systems may be used at a greater pitch where they meet the requirements of this chapter and materials are adequately held in place.
The cumulative effect of water discharging from multiple balconies in vertical alignment should be taken into account.
Updated chapter 6 6 staircases this chapter has been fully updated to make it clearer and align with industry guidance revised chapter 9 1 a consistent approach to finishes includes new guidance as well as a review of the existing tolerances to ensure they are appropriate and meet the reasonable expectations of homeowners.
The structural design of flat roofs and balconies should.
Nhbc standards chapter 7 1 flat roofs and balconies.
Issues to be taken into account include.
Open slatted balcony decking should drain away from the home.